package com.iro.blog.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Util {
    public static  String code(String str){
        try {
            MessageDigest md=MessageDigest.getInstance("MD5");
            md.update(str.getBytes());
            byte[] byteDigets=md.digest();
            int i;
            StringBuffer buffer=new StringBuffer("");
            for (int offset=0;offset<byteDigets.length;offset++){
                i=byteDigets[offset];
                if (i<0)
                    i+=256;
                if (i<16)
                    buffer.append("0");
                buffer.append(Integer.toHexString(i));
            }
            return buffer.toString();
        }catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return null;
        }

    }

    public static void main(String[] args) {
        System.out.println(code("1111111"));
    }
}
